Basic concepts:
- A number is how many things there are in a set
- 10 is a special organizer of our numeral system
- Addition and subtraction as inverses (four versions of a mathematical sentence)
- Interpretations of subtraction
- Quiz

Applying basic facts to computation within 100:
- Multiplying with 10 and multiples of 10
- Applying across-10 addition and subtraction facts to computation within 100
- Order of operations (multiplication and division have priority over addition and subtraction)
- Unit 2 review

Place Value

Week 7

Concept of place value:
- Concept of place value
- Adding and subtracting multi-digit numbers with columns

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